SweetandSour34 SweetandSour34

02-05-2018
Mathematics

contestada

21 marbles out of N are blue; probability of getting a blue one = 30%

Respuesta :

twvogels twvogels

02-05-2018

[tex]Probability=\frac{desired}{total}[/tex]
[tex]0.3=\frac{21}{N}[/tex]
[tex]0.3N=21[/tex]
[tex]N=\frac{21}{0.3}[/tex]
[tex]N=70[/tex]

There are 70 total marbles.

Answer Link

Otras preguntas

Can someone please explain to me how to do this problem

Which conflicting motivates is Carmody most likely to be struggling with when he delivers speech 29

Which is another term for calisthenics?

The Fourth Amendment’s requirement for a warrant ________. * applies only to searches of the home applies only to the seizure of property as evidence does not p

why it is dangerous for people to continue to travel into space?

the value of a baseball card after t years can be modeled by the function v(t)=10+2.5t find the value of the card after 20 years

The student council at Clarksville High School is making T-shirts to sell for a fundraiser, at a price of $10 apiece. The costs, meanwhile, are $8 per shirt, pl

The rectangular prism is made of 1-inch cubes.If two more layers of cubes are placed on top of the rectangular prism, how many more cubes areadded to the prism?

Help me with this question

something unknown which needs to be solved is -------------